Carbureter.



P. J. GROUVELLE, E. H. ARQUEMBOURG a L. J. JORET. CARBURETER.

APPLIOATION FILED JAN.4,1910.

Patented Feb. 28,

PHILIPPE JULES GRoUvnLL-E, EMILE HENRI ARQUEMBOURG, AND LoN JEAN Joni-ir,

' or raars, FRANCE.

CARBURETER.

Specification of Letters Patent.

Patented Feb, 28, 1911.

Application filed January 4, 1910. Serial No. 536,331.

Republic of France, engineers, and all citizens of the French Republic, have invented an Automatic-ally and Hand Cont-rolled Carburetor, of which the following is a full, clear, and exact description.

Explosion. motors, especially those used on motoii'fvehicles must work at widely different speeds and exert also at each of the speeds, different powers according,n to the conditions of the load and to the prbtile`of the road followed. On the other hand, the gas sucked in by the motor must always have the chemical composition most favorable to the combustion and it is for this purpose that controllablb carbureters have been conceived, which can supply ,to the motor the mixture of hydrocarbons and air suited to its ilormalworking. Actually, the controllable also the following disadvantage:

carbureters are of two types: First, those designated under the name of automatically controlled carbureter, are arrangedin such manner that the suction of the motor, which is varied by means of a slide valve, butterfly valve or other equivalentudevice, determines the admission of the fuel and air; the admission of the air is varied automatically by the arrangement of a special system of flap valve, of suitable form, loaded with a Weight or springwhich often connected to a piston or diaphragm on which acts the depression of the motor. Sec/ond, those designated under the name of hand controlled carbureter. In these apparatus, the driver operates, by cylindrical, circular', rotary or other slide valve opening?Il the suction inlet of the motor and the pure air inlet.

The automatic carbureter presents this disadvantage, that for starting, the pure air flap valves are lifted and, consequently, the fuel which then must be in excess is not sucked in in sufficient quantity. This is also true when the speed of the motor is not very great. The hand controlled carb eter has ien the motor must exert all its power, either :for starting, or when going uphill and that it is then necessary to open entirely the suction vequivalent automatic device,

means of a handle, a rectilinear,v

and closing simultaneouslyV inlet of the motor, the latter slows down under the tractive force to be produced and -does'not suck a suiiicient quantity otfuel.

The present invention is intended to remedy these defects and consists in a device which combines the hand control and the automatic control.

The accompanying of example a method device.

In this drawing, a is the the motor.

bis the extra pure air inlet provided with an automaticvalve c for instance a multiple ball valve, the shape of this opening b is such as to admit the proper amount of air under all conditions.

Z is a slide valve moving in the direi-fon drawing shows by way of construction of this suction pipe of .of its longitudinal axis and controlling the suction inlet a and the pure air inlet"Z c is the mixing chamber formed in the interior of this slide valve.

f is the pipe leading to the carbureterand by which arrives the fuel issuing1 from the spraying nozzle g and already mixed with a certain quantity `of air.

By means of this device, when the motor exerts its full power for instance when going uphill, and when the suction inlet of the motor is completely opened, the pure air inlet is opened at the same time, but as it is closed bythe ball valve c or by any other the pure air inlet admits air only if the suction is suilicient. In these conditions, the disadvantage inherent to the hand control is prevented and the disadvantage due to the automatic control is also prevented. y

It is desirable in order that the motor may not exceed its minimum speed when running light that the inlet valve a for the gas be opened as little as possible and to permit the driver to control the amount of opening. The carbureter combined as indicated above is preferably provided with a movable abutment consist-ing 'of a cone fz. having a screw threaded rod z', which engages a threaded opening in the stationary support 7c extending laterally from the trame of the apparatus. A flange Z is 'secured to the operating rod m of the slide valve Z; 'and toward the ends of the stroke, the said rod presses against the abutment it. By moving the abutment toward or from the support In the 2 i 98eme time at which the end of the rod m, engages kind of shell or seat of a cock rotating on itself. Moreover, the ball valve c may be replaced by any other system of spring valve on valve loaded With a Weight which opens more or less to an extent depending on the suction of the motor.

, Claim-'- In a carbureter, the combination of a body of tubular form having a primary air tube into which the fuel is let and which conveys the rich mixture, a second tube furnished with an additional automatic air supply valve, and a third tube fixed to the suction Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

tube of the motor, a hollow movable valve, the interior of which forms a mixing chainber and which has three openings corresponding respectively with the rich mixtureYY inlet, the additional air inlet and the outlet for the final mixture, the rich mixture inlet of such Valve being longer than that of the additional air supplyinlet so.that the area of the passage for the rich mixture is suitably proportioned to the area of the passage forthe additionalair supply and to that of 35 the outlet for the final mixture, and so that the inlet for the additional air supply can be closed Without risk of accidental opening While the inlet for'the rich mixture is open.

The foregoing specification of our autoinatically and hand controlled carbureterA signed by us this 21st day of December 1909.

lHlLlPlE JULES GROUVELLE. EMILE HENRI ARQUEMBOURG. LON JEAN JORET. Witnesses -HANsoN C. Coxn, R. EHinio'r.

Washington, I). C. 

